Electric height adjustable desk

The disclosure relates to electric height-adjustable desks, and more particularly relates to an electric height adjustable desk.

An existing electric height adjustable desk generally comprises a column, a frame, and a side board; the side board is connected to the frame at each of two sides of the frame, the column being disposed at each of two ends of the bottom of the frame so as to support the frame, where the column, the frame, and the side board are usually assembled via screws, the drawbacks of which are such that manual assembly of the height adjustable desk is cumbersome, inconvenient, and inefficient.

An electric height adjustable desk is provided, which overcomes cumbersome and inconvenient assembly in conventional electric height adjustable desks.

An electric height adjustable desk according to the disclosure comprises: a frame and a column, the frame comprising a crossbar and a side board connected at each of two ends of the crossbar, an end portion of the column being provided with a chassis enclosure, an accommodation cavity being provided on the crossbar, the chassis enclosure being at least partially embedded in the accommodation cavity; a detachable first latch mechanism is provided between a side surface of the side board and the chassis enclosure, the side board being detachably connected to the crossbar via the first latch mechanism; a detachable second latch mechanism is provided between the chassis enclosure and the crossbar; a locking device is provided on the chassis enclosure, the locking device being locked on the crossbar to maintain a connected state between the first latch mechanism and the second latch mechanism, the second latch mechanism being disposed between the locking device and the first latch mechanism.

In the electric height adjustable desk, the first latch mechanism comprises a first journal, a first engaging groove, and a second engaging groove, the first engaging groove and the second engaging groove being snap-fitted with the first journal, respectively, the first journal being disposed on the side board, the first engaging groove being provided at one end of the crossbar, the second engaging groove being provided at one end of the chassis enclosure.

In the electric height adjustable desk, the second latch mechanism comprises a third engaging groove, and a second journal fitted with the third engaging groove, either one of the second journal and the third engaging groove being provided at an inner side of the crossbar, another one of the second journal and the third engaging groove being provided at a side surface of the chassis enclosure.

In the electric height adjustable desk, an opening direction of the first engaging groove is opposite to an opening direction of the second engaging groove, and the opening direction of the first engaging groove is consistent with an opening direction of the third engaging groove.

In the electric height adjustable desk, at least two second journals are provided, a plurality of the second journals being distributed, along a length direction of the crossbar, on the side surface of the chassis enclosure or at the inner side of the crossbar.

In the electric height adjustable desk, the locking device comprises a locking element and an unlocking element, the locking element being movably disposed on the chassis enclosure, the crossbar being provided with a socket insert-fitted with the locking element, the locking element being movable relative to the chassis enclosure into the socket to thereby lock the chassis enclosure to the crossbar, the unlocking element being configured to bring the locking element to move so as to be detached from the socket.

In the electric height adjustable desk, a cavity for accommodating the locking element is provided in the chassis enclosure, an elastic member configured to push the locking element through the chassis enclosure into the socket being provided in the cavity.

In the electric height adjustable desk, a guide rib configured to guide the locking element to move into the socket is provided in the chassis enclosure.

In the electric height adjustable desk, the unlocking element and the locking element are connected, the unlocking element being partially disposed outside the chassis enclosure so that the locking element is moved by the unlocking element from outside of the chassis enclosure.

In the electric height adjustable desk, an end portion of the crossbar is provided with a mounting groove opened upwards, the side board having a mounting lug embeddable in the mounting groove, the first journal being disposed on the mounting lug.

The disclosure offers the following benefits:

In the disclosure, the chassis enclosure is provided at an end portion of the column; the side board is detachably connected to the crossbar and the chassis enclosure via the first latch mechanism, respectively; in this way, the side board, the crossbar, and the chassis enclosure may be preliminarily fixed. The chassis enclosure and the crossbar are further connected via the second latch mechanism, so that the chassis enclosure may be limited and supported by the second latch mechanism. Moreover, the locking device disposed on the chassis enclosure further locks the chassis enclosure to the crossbar, which may maintain the connected state between the side board, the frame, and the chassis enclosure via the first latch mechanism, and the connected state between the crossbar and the chassis enclosure via the second latch mechanism. As such, the side board is synchronously limited while the chassis enclosure is fixed to the crossbar, which realizes synchronous fixation between the side board, the crossbar, and the chassis enclosure, thereby facilitating assembly of the electric height adjustable desk.

In the disclosure, the second latch mechanism is disposed between the first latch mechanism and the locking device, the chassis enclosure, when being accommodated in the accommodation cavity, is connected to the side board via the first latch mechanism, and the chassis enclosure and the crossbar are connected via the locking device, whereby the two ends of the chassis enclosure are limited. Meanwhile, the second latch mechanism is employed to connect the middle portion of the chassis enclosure to the crossbar, such that the two ends and the middle portion of the chassis enclosure are all fixed, which further enhances stability and pressure-bearing performance of the chassis enclosure, and provides a more stable connection between the side board, the crossbar, and the chassis enclosure.

In a further solution, the first latch mechanism comprises a first journal, a first engaging groove, and a second engaging groove, the first engaging groove and the second engaging groove being snap-fitted with the first journal, respectively, the first journal being disposed on the side board, the first engaging groove being provided at one end of the crossbar, the second engaging groove being provided at one end of the chassis enclosure. By snap-fitting the crossbar and the chassis enclosure with the first journal via the first engaging groove and the second engaging groove, respectively, combination and connection of the crossbar, the chassis enclosure, and the first journal are facilitated; meanwhile, to enable snap-fitting between the second engaging groove and the first journal, a corresponding opening end is provided in each engaging groove, so that after the second engaging groove is snap-fitted with the first journal, the chassis enclosure may be rotated, via the second engaging groove, into the accommodation cavity about the first journal as a point of rotation, which facilitates quick assembly of the chassis enclosure into the accommodation cavity; as such, the chassis enclosure, after being embedded in the accommodation cavity, is locked to the crossbar, and then the first latch mechanism and the second latch mechanism are deployed to maintain the connected state between the crossbar, the side board, and the chassis enclosure, rendering the assembly more convenient and reliable.

In a further solution, the second latch mechanism comprises a third engaging groove, and a second journal fitted with the third engaging groove, either one of the second journal and the third engaging groove being provided at an inner side of the crossbar, another one of the second journal and the third engaging groove being provided at a side surface of the chassis enclosure. The snap-fitted second journal and third engaging groove, which are respectively formed at the side surface of the chassis enclosure and the inner side of the crossbar, enable limitation to the rotating angle of the chassis enclosure after the chassis enclosure is snap-fitted with the first journal via the second engaging groove, and further enhance stability of the chassis enclosure mounted on the crossbar as well as pressure-bearing performance of the chassis enclosure after the two ends of the chassis enclosure are respectively fitted with the first journal via the second engaging groove and the locking device is insert-fitted to be locked with the frame.

In a further solution, an opening direction of the first engaging groove is opposite to an opening direction of the second engaging groove, and the opening direction of the first engaging groove is consistent with an opening direction of the third engaging groove. By setting the opening direction of the first engaging groove opposite to the opening direction of the second engaging groove, fitting of the crossbar and the side board with the first journal via the first engaging groove and the second engaging groove enables limitation to the moving direction of the first journal, which prevents the first journal from being detached from the position overlapping with the opening of the first engaging groove or the second engaging groove if the opening direction of the first engaging groove was set consistent with that of the second engaging groove. By setting the opening direction of the first engaging groove consistent with the opening direction of the third engaging groove, one end of the chassis enclosure and the side board are limited by the fitting between the second engaging groove and the first journal and the fitting between the second journal and the third engaging groove; since one end and the middle portion of the chassis enclosure being limited, at which time the chassis enclosure can only move towards the opening direction of the third engaging groove with the second journal as a supporting point and the first journal as a point of rotation, and after the chassis enclosure is locked to the crossbar via the locking device, the two ends and the middle portion of the chassis enclosure are all limited, so that the chassis enclosure is securely fixed in the accommodation cavity.

In a further solution, at least two second journals are provided, a plurality of the second journals being distributed, along a length direction of the crossbar, on the side surface of the chassis enclosure or at the inner side of the crossbar. The two horizontally arranged second journals can increase connection stability between the chassis enclosure and the crossbar via fitting between the third engaging groove and the second journal; this prevents the chassis enclosure from swaying after being embedded in the accommodation cavity, and enhances stability and pressure-bearing performance of the chassis enclosure in the crossbar.

In a further solution, the locking device comprises a locking element and an unlocking element, the locking element being movably disposed on the chassis enclosure, the crossbar being provided with a socket insert-fitted with the locking element, the locking element being movable relative to the chassis enclosure into the socket to thereby lock the chassis enclosure to the crossbar, the unlocking element being configured to bring the locking element to move so as to be detached from the socket. The locking element movably disposed on the chassis enclosure facilitates the chassis enclosure, after being mounted in the accommodation cavity, to be insert-fitted with the socket provided on the crossbar, thereby further limiting position of the chassis enclosure on the crossbar; while the unlocking element facilitates driving the locking element to be detached from the crossbar, thereby casily unlocking the insert-fitting between the chassis enclosure and the frame.

In a further solution, a cavity for accommodating the locking element is provided in the chassis enclosure, an elastic member configured to push the locking element through the chassis enclosure into the socket being provided in the cavity. Provision of the elastic element facilitates pushing the locking element out of the chassis enclosure so as to facilitate connection to the crossbar, which also facilitates squeezing the locking element to be detached from the socket.

In a further solution, a guide rib configured to guide the locking element to move into the socket is provided in the chassis enclosure. The guide rib is set to limit a movable range of the locking element in the chassis enclosure, so that the locking element, when moving inside the chassis enclosure, is guided to be accurately inserted into the socket on the crossbar.

In a further solution, the unlocking element and the locking element are connected, the unlocking element being partially disposed outside the chassis enclosure so that the locking element is moved by the unlocking element from outside of the chassis enclosure. Disposing the unlocking element outside the chassis enclosure facilitates adjusting the position of the unlocking element from outside of the chassis enclosure to drive the locking element to be separated from the socket, thereby implementing quick detachment of the chassis enclosure from the frame.

In a further solution, an end portion of the crossbar is provided with a mounting groove opened upwards, the side board having a mounting lug embeddable in the mounting groove, the first journal being disposed on the mounting lug. Embedding the mounting lug in an end portion of the crossbar facilitates connection between the side board and the end portion of the crossbar, which also facilitates concealment of the connecting structure between the side board and the crossbar, giving a more aesthetic appearance.

The above and other features and advantages of the disclosure will be described in detail below through specific example embodiments in conjunction with accompanying drawings.

Hereinafter, the technical solutions of the disclosure will be explained and illustrated through embodiments with reference to the accompanying drawings. However, the embodiments are only some embodiments of the disclosure, not all of them. Other embodiments obtained by those skilled in the art based on the examples in the embodiments without exercise of inventive work all fall within the protection scope of the disclosure.

In the description of the disclosure, it needs to be understood that the orientational or positional relationships indicated by the terms “center,” “longitudinal,” “transverse,” “length,” “width,” “thickness”, “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “clockwise,” “counterclockwise,” etc. are orientational and positional relationships based on the drawings, which are intended only for facilitating description of the disclosure and simplifying relevant illustrations, not for indicating or implying that the devices or elements compulsorily possess those specific orientations and are compulsorily configured and operated with those specific orientations; therefore, such terms should not be construed as limitations to the disclosure.

Besides, the terms “first” and “second” are only used for descriptive purposes, which shall not be construed as indicating or implying relative importance or implicitly indicating the amount of a referred to technical feature. Therefore, the features limited by “first” and “second” may explicitly or implicitly include one or more of such features. In the description of the disclosure, unless otherwise indicated, “plurality” indicates two or more.

In the disclosure, unless otherwise explicitly provided and limited, the terms such as “mount,” “connect,” “couple,” and “fix” should be understood broadly, which, for example, may refer to a fixed connection, a detachable connection, or an integral connection; which may be a mechanical connection or an electrical connection; which may be a direct connection or an indirect connection via an intermediate medium; which may also be a communication between the insides of two elements. To a person of normal skill in the art, specific meanings of the above terms in the disclosure may be construed based on specific situations.

In the disclosure, unless otherwise explicitly provided and limited, an expression that a first feature is “above” or “below” a second feature may refer to a direct contact between the first feature and the second feature or may refer to a scenario where although the first feature and the second feature do not contact directly, they contact via a further feature therebetween. Moreover, the expression that the first feature is “above” or “over” or “on” the second feature refers to a situation where the first feature is exactly or generally over the second feature or only refers to a situation that the horizontal height of the first feature is higher than the second feature. The expression that the first feature is “under” or “below” or “beneath” the second feature refers to a situation where the first feature is exactly or generally below the second feature or only refers to a situation that the horizontal height of the first feature is lower than the second feature.

Referring to, an electric height adjustable desk according to embodiments of the disclosure generally comprises: a column assembly, a frame, and a side board; the side boardis mounted at each of two ends of the frame, a desktop support of an “H”-like shape being formed between the side boardand the frame to mount a desktop; the frame generally includes two parallelly arranged crossbars, an accommodation cavity being formed between end portions of the two crossbars; the column assembly comprises a columnand a chassis enclosureembeddable in the accommodation cavity; one end of the chassis enclosureis connected to the side boardvia a first latch mechanism, a first engaging grooveconnected to the first latch mechanism being provided at an end portion of each crossbar, a side surface of the chassis enclosurebeing connected to an inner side of the crossbarvia a second latch mechanism, while the other end of the chassis enclosurebeing insert-fitted with the crossbarvia a locking device.

In this example embodiment, the first latch mechanism comprises a second engaging groovedisposed at a side surface of one end of the chassis enclosure, and a first journaldisposed at the side board; the second latch mechanism comprises a second journaldisposed at an inner side of the crossbar, and a third engaging groovedisposed at each of two sides of the chassis enclosureand fitted with the second journal; the locking device comprises two locking elementsdisposed at one end of the inside of the chassis enclosuredistant from the second engaging groove, and an unlocking elementconnected to the locking elements; the chassis enclosurecomprises an upper housingand a lower housing, a cross section of the upper housinghaving a U-shaped structure, a second engaging groovebeing provided at the end of each of the two sides of the upper housingproximal to the side board; a mounting lugbent towards the inside of the crossbaris provided in a middle portion of the side board, two first journalsbeing provided on the mounting lug; the locking elementmovable on the chassis enclosureis provided at one end of the chassis enclosuredistant from the second engaging groove, two locking elementsbeing provided; the ends of the two locking elementsdisposed inside the chassis enclosureare elastically loaded via an elastic member; through holes accommodating the locking elementsand configured for the locking elementsto pass through are provided at two sides of the chassis enclosure; the locking elements, when being elastically loaded by the elastic member, can project out of the through holes at the two sides of the chassis enclosureand can be inserted into the socketsprovided in the inner side of the crossbar; an end portion of the crossbaris provided with a first engaging groovethat may be snap-fitted with the first journal.

In this example embodiment, an electric motor for driving the columnto ascend and descend may be mounted on the columnor on the crossbar; the chassis enclosureis configured to connect the columnto the crossbarand the side board. It can be contemplated that if the chassis enclosureis large enough, a corresponding actuator may also be directly mounted in the chassis enclosure.

In this example embodiment, referring to, an end portion of the crossbaris provided with a mounting grooveopened upwards; the first engaging grooveis formed at an inner side of the crossbar. When mounting the side boardwith the crossbar, the mounting lugis correspondingly embedded in the mounting groove, while the first journalon the mounting lugis correspondingly embedded in the first engaging groove; in this way, by embedding the mounting luginto the mounting groove, quick connection between the side board and the crossbarcan be realized; meanwhile, the mounting lugis also concealed inside the mounting grooveof the crossbar, which optimizes product structure and reduces exposure of the connecting structure to render a more aesthetic appearance.

In this example, a third engaging grooveis provided at each of the two sides the chassis enclosurein the middle, while a second journalcorresponding to the third engaging grooveis provided at the inner side of the crossbar; an opening direction of the third engaging grooveis consistent with that of the first engaging groovebut opposite to the opening direction of the second engaging grooveat the end portion of the chassis enclosure. In this way, when the chassis enclosureis embedded in the accommodation cavity about the first journal, the third engaging grooveon the chassis enclosureis smoothly snap-fitted in the second journal; meanwhile, since the opening direction of the third engaging grooveis opposite to that of the second engaging groove, the chassis enclosure, when being embedded into the accommodation cavity, can only move towards the opening direction of the third engaging groovewith the second journalas a supporting point and the first journalas a point of rotation. After the chassis enclosureis insert-fitted and locked with the crossbarvia the locking element, the two ends and the middle portion of the chassis enclosureare all limited, so that the chassis enclosureis securely fixed in the accommodation cavity, whereby the side board, the crossbar, and the chassis enclosureare securely locked.

Referring to, specifically, to assemble the crossbar, the side board, and the chassis enclosure, the first journaldisposed on the side boardis first embedded in the first engaging grooveof the crossbarvia the opening of the first engaging groove, then one end of the chassis enclosureis snap-fitted in the first journalvia the second engaging groove(in this example, the opening direction of the first engaging grooveis opposite to that of the second engaging groove); next, the chassis enclosureis embedded into the accommodation cavity with the first journalas the point of rotation; when the chassis enclosureis embedded in the accommodation cavity, the locking elementis squeezed by a side surface of the crossbar, causing the locking elementto compress the elastic memberto be folded into the chassis enclosure; next, when the chassis enclosureis completely embedded in the crossbar, the socketof the crossbarcorresponds to the position of the locking element, so that the locking element, when being elastically loaded by the elastic member, projects out of the chassis enclosureand is inserted through the through hole into the socketat the inner side of the crossbar; in this way, one end of the chassis enclosureis connected to the first journalof the side boardvia the second engaging groove, while the other end thereof is connected to the crossbar, thereby completing locked connection between the side board, the chassis enclosure, and the crossbar.

In this embodiment, the crossbar, the chassis enclosure, and the side boardare connected with each other by snap-fitting between engaging grooves and mated journals. Upon assembly, the opening portion of the engaging groove allows the chassis enclosureto rotate about the first journalwhen an end portion of the chassis enclosureis snap-fitted to the outside of the first journalvia the second engaging groove; in this way, upon assembly, after the chassis enclosurerotates about the first journalvia the second engaging grooveinto the accommodation cavity, the second journaland the mated third engaging groove, which are disposed between a side surface of the chassis enclosureand the crossbar, are also snap-fitted correspondingly; meanwhile, with the locking elementfor locking the crossbar, locked snap-fitting between the chassis enclosure, the crossbar, and the side boardare smoothly implemented. This not only facilitates assembly, but also conceals the chassis enclosureinto the accommodation cavity on the crossbar, thereby protecting the chassis enclosure while optimizing assembled structure of the product, giving a more reasonable, compact product structure.

In this embodiment, when the chassis enclosureis embedded into the accommodation cavity about the first journalat the joint with the side boardas the point of rotation, quick assembly between the crossbar, the chassis enclosure, and the side boardis implemented, which enhances assembly efficiency and eliminates a need of fixing members such as screws, thereby simplifying and facilitating assembly.

In this example embodiment, the elastic membermay be a spring or an elastic rubber, so long as it has a required elastic deformation amount and can push the locking elements out of the chassis enclosureinto the socketsin the crossbar.

Referring to, in the disclosure, the locking elementis of a sheet structure; one end of the locking elementis provided with a connecting endsmaller than an inner diameter of the spring, and an insert-fitting endcapable of projecting out of the chassis enclosure; the spring is disposed between two connecting endsand configured to apply an elastic pressure against the two connecting endsto urge the insert-fitting endof the locking elementto project out of the chassis enclosure; the front and rear ends of the locking elementare disposed on the lower housingand each is provided with a guide rib, a guide groove being formed in each of the two guide ribs, the guide groove being configured to define a movement direction of the locking elementwhile preventing the locking elementfrom swaying during moving.

In the disclosure, referring to, to enable, upon embedding the chassis enclosurein the accommodation cavity, the locking elementon the chassis enclosureto be smoothly retracted into the chassis enclosurewhen being squeezed by a side surface of the crossbar, a beveled wedge surface in beveled wedge-fitting with the crossbarmay be provided at the insert-fitting endof the locking element, so that when the chassis enclosureis inserted in the accommodation cavity, a side edge of the crossbarcan squeeze against the beveled wedge surface of the locking elementto guide the locking element, after the spring is compressed to be retracted, into the chassis enclosure, while when the through hole on the chassis enclosureis aligned with the socket on the crossbar, the locking element, under an elasticity recovery action of the elastic member, is pushed out of the chassis enclosureinto the socket on the crossbar, thereby implementing locking between the chassis enclosureand the crossbar.

Based on the example embodiments described supra, to facilitate detachment of the locking elementfrom the socketof the crossbarto thereby realize separation between the chassis enclosure, the crossbar, and the side board, an unlocking elementis integrally formed at the lower end of the locking element, and a lower end of the unlocking elementextends outside the chassis enclosure; in this way, by toggling the unlocking element, the locking elementis driven to squeeze and compress the spring to be folded into the chassis enclosure, thereby implementing separation of the chassis enclosurefrom the crossbar.

Based on the example embodiments described supra, referring to, to enhance connection stability between the chassis enclosure, the crossbar, and the side boardand to enhance pressure-bearing performance of the product as well as connection stability between the three parts, at least two second journalsare provided lengthwise along the inner side of the crossbar; the two horizontally arranged second journalsincrease connection stability between the chassis enclosureand the crossbarvia fitting between the third engaging grooveand the second journal, thereby preventing sway of the chassis enclosureembedded in the accommodation cavity and enhancing stability and pressure-bearing performance of the chassis enclosurein the crossbar.

Based on the example embodiments described supra, it may be contemplated that, the second journalsmay be provided at the inner side of the crossbar, and the third engaging groovemay be disposed at each of the two sides of the chassis enclosure; alternatively, the second journalsmay also be disposed at two sides of the chassis enclosure, while the third engaging grooveis correspondingly disposed on the inner side of the crossbar, which may also achieve the effects noted supra.

What have been described above are only example embodiments of the present disclosure; however, the protection scope of the present disclosure is not limited thereto. A person skilled in the art should understand that the disclosure includes, but is not limited to, the contents described in the drawings and the embodiments. Any modifications without departing from the functions and structural principles of the disclosure will be included within the scope of the claims.